mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-12 14:16:17 +09:00
bceb9f0fc8
Per Intel FSP architecture specification, FSP provides 3 routines for bootloader to call. The first one is the TempRamInit (aka Cache-As-Ram initialization) and the second one is the FspInit which does the memory bring up (like MRC for other x86 targets) and chipset initialization. Those two routines have to be called before U-Boot jumping to board_init_f in start.S. The FspInit() will return several memory blocks called Hand Off Blocks (HOBs) whose format is described in Platform Initialization (PI) specification (part of the UEFI specication) to the bootloader. Save this HOB address to the U-Boot global data for later use. Signed-off-by: Bin Meng <bmeng.cn@gmail.com> Acked-by: Simon Glass <sjg@chromium.org>
82 lines
1.8 KiB
C
82 lines
1.8 KiB
C
/*
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* (C) Copyright 2002-2010
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef __ASM_GBL_DATA_H
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#define __ASM_GBL_DATA_H
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#ifndef __ASSEMBLY__
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enum pei_boot_mode_t {
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PEI_BOOT_NONE = 0,
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PEI_BOOT_SOFT_RESET,
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PEI_BOOT_RESUME,
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};
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struct memory_area {
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uint64_t start;
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uint64_t size;
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};
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struct memory_info {
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int num_areas;
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uint64_t total_memory;
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uint64_t total_32bit_memory;
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struct memory_area area[CONFIG_NR_DRAM_BANKS];
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};
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/* Architecture-specific global data */
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struct arch_global_data {
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struct global_data *gd_addr; /* Location of Global Data */
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uint8_t x86; /* CPU family */
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uint8_t x86_vendor; /* CPU vendor */
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uint8_t x86_model;
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uint8_t x86_mask;
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uint32_t x86_device;
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uint64_t tsc_base; /* Initial value returned by rdtsc() */
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uint32_t tsc_base_kclocks; /* Initial tsc as a kclocks value */
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uint32_t tsc_prev; /* For show_boot_progress() */
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uint32_t tsc_mhz; /* TSC frequency in MHz */
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void *new_fdt; /* Relocated FDT */
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uint32_t bist; /* Built-in self test value */
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struct pci_controller *hose; /* PCI hose for early use */
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enum pei_boot_mode_t pei_boot_mode;
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const struct pch_gpio_map *gpio_map; /* board GPIO map */
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struct memory_info meminfo; /* Memory information */
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#ifdef CONFIG_HAVE_FSP
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void *hob_list; /* FSP HOB list */
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#endif
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};
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#endif
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#include <asm-generic/global_data.h>
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#ifndef __ASSEMBLY__
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static inline __attribute__((no_instrument_function)) gd_t *get_fs_gd_ptr(void)
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{
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gd_t *gd_ptr;
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asm volatile("fs movl 0, %0\n" : "=r" (gd_ptr));
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return gd_ptr;
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}
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#define gd get_fs_gd_ptr()
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#endif
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/*
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* Our private Global Data Flags
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*/
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#define GD_FLG_COLD_BOOT 0x00100 /* Cold Boot */
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#define GD_FLG_WARM_BOOT 0x00200 /* Warm Boot */
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#define DECLARE_GLOBAL_DATA_PTR
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#endif /* __ASM_GBL_DATA_H */
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